Prevalence and predictors of adolescent linear growth and stunting across the urban–rural gradient in eastern Ethiopia

Objective: To assess the magnitude and factors associated with adolescent linear growth and stunting in two eastern Ethiopian communities. Methods: This cross-sectional study was conducted in the urban Harar Health Demographic Surveillance Site (HDSS) and rural Kersa Demographic Surveillance and Health Research Center (KDS-HRC). Univariate analysis was used to describe the data. Multiple regression models examined predictors of linear growth. Logistic regression was used to examine factors associated with stunting. Results: The study included 2010 adolescents. The prevalence of stunting was 26.9% (95% CI 24.9, 28.9), with 8.1% among urban adolescents (95% CI 6.5, 9.9) vs. 47.9% among rural ones (95% CI 44.6, 51.1). There was a significant interaction between residence and sex on the risk of stunting [AOR = 4.17 (95% CI 2.66, 9.9), P < 0.001], and height-for-age z score (HAZ) (β = −0.51, P < 0.001). For urban adolescents, older age (18 to 19 years) was negatively associated with linear growth (β= −0.29; P < 0.001). In the rural setting, handwashing practice after toileting was positively associated with HAZ (0.62; P < 0.001) and with lower risk of stunting [AOR = 0.51 (95% CI 0.34, 0.76)]. Urban females had significantly higher HAZ than urban males [β = 0.52; P < 0.01)], and a significantly lower risk of stunting [AOR = 0.29 (95% CI 0.18, 0.48)]. Conclusions: There are significant disparities in the magnitude of stunting between urban and rural adolescents. The gender gap in stunting and linear growth, along with a high prevalence of stunting in early adolescence, calls for age-appropriate and gender-sensitive interventions. Particular attention and context-specific interventions are warranted for adolescents in these and similar rural eastern Ethiopian communities.